Speakers
 

I have a pair of 'AR' Hi Fi speaker enclosures which went into storage
for a while and came out with rotted suspension on the bass cones. In
order to change these bass units I have been trying to find who makes
hi fi speakers these days. Not just guitar amp speakers or car
speakers, real hi-fi speakers. It used to be Goodmans, Celestion etc.
but all searches under speakers, frame speakers, chassis speakers,
just turn up rows of systems or piles of wooden boxes. I've got wooden
boxes, I just want the speakers. Can somone please help me with a
manufacturer of good quality units to fit in my enclosures.

Speakers
 

Bin them; they're old and past it.

Having, as I do, an electroacoustics degree, I can tell you that
drivers and enclosures (well, in the case of the woofers, anyway)
are designed to go together. The volume of the cabinet interacts
with the mass, stiffness, resonances, etc. of the driver, and it is a very
complex matter to get the performance required. The volume of
the cabinet, and the length and diameter of any bass port all
"show up" in the electrical circuit too, so then the crossover also
gets involved.

Sure, you could get a woofer that fits, and bung it in, but do
*not* expect the result to be "hi-fi" (whatever that means), and don't
expect the result to be anything like what was intended, or achieved,
by the manufacturer in the configuration as sold.


Martin
--
M.A.Poyser Tel.: 07967 110890
Manchester, U.K. http://www.livejournal.com/userinfo.bml?user=fleetie

Speakers
 

Speakers
 

I have a pair of 'AR' Hi Fi speaker enclosures which went into storage
for a while and came out with rotted suspension on the bass cones. In
order to change these bass units I have been trying to find who makes
hi fi speakers these days. Not just guitar amp speakers or car
speakers, real hi-fi speakers. It used to be Goodmans, Celestion etc.
but all searches under speakers, frame speakers, chassis speakers,
just turn up rows of systems or piles of wooden boxes. I've got wooden
boxes, I just want the speakers. Can somone please help me with a
manufacturer of good quality units to fit in my enclosures.


** Try Vifa or Peerless.

In the UK see:

http://www.henleydesigns.co.uk/content.asp?ContentID=1

The page takes forever to load and I did not wait .



.......... Phil

Speakers
 

" wrote:

I have a pair of 'AR' Hi Fi speaker enclosures which went into storage
for a while and came out with rotted suspension on the bass cones. In
order to change these bass units I have been trying to find who makes
hi fi speakers these days. Not just guitar amp speakers or car
speakers, real hi-fi speakers. It used to be Goodmans, Celestion etc.
but all searches under speakers, frame speakers, chassis speakers,
just turn up rows of systems or piles of wooden boxes. I've got wooden
boxes, I just want the speakers. Can somone please help me with a
manufacturer of good quality units to fit in my enclosures.

Almost no-one makes such units for DIY assembly any more.

You might be able to get the originals repaired though. Check out Wembley
Loudspeakers for example but I wonder if they're worth the trouble.

Graham

Speakers
 

Phil Allison wrote:


I have a pair of 'AR' Hi Fi speaker enclosures which went into
storage for a while and came out with rotted suspension on the bass
cones. In order to change these bass units I have been trying to
find who makes hi fi speakers these days. Not just guitar amp
speakers or car speakers, real hi-fi speakers. It used to be
Goodmans, Celestion etc. but all searches under speakers, frame
speakers, chassis speakers, just turn up rows of systems or piles of
wooden boxes. I've got wooden boxes, I just want the speakers. Can
somone please help me with a manufacturer of good quality units to
fit in my enclosures.


** Try Vifa or Peerless.

In the UK see:

http://www.henleydesigns.co.uk/content.asp?ContentID=1

The page takes forever to load and I did not wait .

Just as well as there's absolutely no mention of any louspeaker units of any
make in their list of products let alone Vifa or Peerless

Speakers
 

wrote in message
oups.com...
I have a pair of 'AR' Hi Fi speaker enclosures which went into storage
for a while and came out with rotted suspension on the bass cones. In
order to change these bass units I have been trying to find who makes
hi fi speakers these days. Not just guitar amp speakers or car
speakers, real hi-fi speakers. It used to be Goodmans, Celestion etc.
but all searches under speakers, frame speakers, chassis speakers,
just turn up rows of systems or piles of wooden boxes. I've got wooden
boxes, I just want the speakers. Can somone please help me with a
manufacturer of good quality units to fit in my enclosures.



www.wilmslow-audio.co.uk


--
Woody

harrogate three at ntlworld dot com

Speakers
 

Fleetie wrote:
Bin them; they're old and past it.

Having, as I do, an electroacoustics degree, I can tell you that
drivers and enclosures (well, in the case of the woofers, anyway)
are designed to go together. The volume of the cabinet interacts
with the mass, stiffness, resonances, etc. of the driver, and it is a very
complex matter to get the performance required. The volume of
the cabinet, and the length and diameter of any bass port all
"show up" in the electrical circuit too, so then the crossover also
gets involved.

Sure, you could get a woofer that fits, and bung it in, but do
*not* expect the result to be "hi-fi" (whatever that means), and don't
expect the result to be anything like what was intended, or achieved,
by the manufacturer in the configuration as sold.

That's not strictly true. If the replacement woofer has the right
impedance and sensitivity it will match the midrange; if you put the
Thiele-Small parameters and the box size into a design program such
as WinISD you will see if it works, possibly with some adjustment of
the reflex port tuning.

--
Eiron.

Speakers
 

"Eiron"
Fleetie wrote:

Sure, you could get a woofer that fits, and bung it in, but do
*not* expect the result to be "hi-fi" (whatever that means), and don't
expect the result to be anything like what was intended, or achieved,
by the manufacturer in the configuration as sold.

That's not strictly true. If the replacement woofer has the right
impedance and sensitivity it will match the midrange;


** Shame if there is no midrange unit.

Then the woofer/mid becomes a performance critial driver.


if you put the
Thiele-Small parameters and the box size into a design program such
as WinISD you will see if it works, possibly with some adjustment of
the reflex port tuning.


** Shame how no AR speakers were ported designs.

The company were most famous for their "Acoustic Suspension " designs -
using very low resonance / high moving mass bass /mid drivers.

Far out tech for the late 1950s.

Copied by all and sundry in the 60s and 70s.



........ Phil

Speakers
 

"Eiron" wrote in message
...


That's not strictly true. If the replacement woofer has the right
impedance and sensitivity it will match the midrange; if you put the
Thiele-Small parameters and the box size into a design program such
as WinISD you will see if it works, possibly with some adjustment of
the reflex port tuning.

Point well taken that at minimum, the replacement driver must have
compatible T/S parameters. If you end up adjusting the port, there is a
possibility that the new driver's efficiency is not quite right.

However, the HF characteristics of the replacement woofer are not predicted
by T/S parameters, and can vary quite sharply from woofer to woofer. This
is particularly true of the smaller drivers, which are often called on to
function well up into the midrange.